I voted no, because in theory you could put just as much stress on the engine on the street...however, most people aren't ballsy (stupid?) enough to push that hard on public roads. I don't think running at high RPM's or under load is what hurts the engines--they're designed to do that for extended p...

Honestly, it seems like a lot of these setup changes are just guesses. If I were unhappy with how my car was handling, I would "reset" everything I could in order to find out which handling "symptoms" are caused by which suspension setting. I'd go back to the stiffest front/rear bar combo you can ge...

+1, I got to try out my new tires and brakes today. Minimal traffic, zero police presence...nice day to push a little harder than normal and really have some fun. I got James' semi-approval because my car is now "fun to chase[or follow 3 feet off my bumper]", lol.

Well, a 335f/450r spring rate is a .7444 front/rear spring rate ratio, and a 500f/550r combo is a .909091 ratio...it's possible that could be part of your problem. This assumes, of course, that these springs are designed specifically for your car, with that being close to the ideal ratio...if memory...

What diameter sways do you have, and what diameters are available? Maybe I'm missing something obvious, but if you haven't already, I'd get the stiffest front and rear I possibly could and back either front or rear rate down from there...more roll stiffness isn't going to hurt a car than already lif...

John, can you fit a glasspack after all the bends in the piping, right at the bumper? That's how my exhaust is setup, and it's not too loud (dunno if you listened yesterday--but you probably wouldn't have been able to hear it anyway :lol: ). I'd probably keep the stock piping after the cat as well, ...